Why does CAS 23103-98-2 appear in more than one EU cosmetic annex?

A substance identified by CAS 23103-98-2 may appear in multiple EU cosmetic regulation annexes when it is subject to different conditions in different contexts — for example, restricted under Annex III with specific conditions, while also appearing in Annex IV as an approved colorant under separate entry conditions. Each entry must be reviewed individually.

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Use the INCI Checker on CosIng Checker with INCI names, CAS numbers or EC numbers. Paste CAS 23103-98-2 to screen it directly, then review every linked annex record and supplier document.

CAS 1 record

CAS 23103-98-2

Q: How do I use CAS 23103-98-2 for compliance screening?

Cross-reference CAS 23103-98-2 against your raw material specification sheets and CoA documents. When it appears in Annex II, verify absence. When it appears in Annex III, verify that concentration limits and product type conditions are met. All annex entries sharing this CAS number are listed on this page.

CAS 23103-98-2 matches 1 EU annex record across Annex II–VI of Regulation 1223/2009.

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Chemical identity and properties

PubChem 2D chemical structure for CAS 23103-98-2

CAS 23103-98-2PubChem CID 31645

Pirimicarb

Pirimicarb is an aminopyrimidine that is N,N,4,5-tetramethylpyrimidin-2-amine substituted by a (dimethylcarbamoyl)oxy group at position 4. It has a role as an insecticide, an agrochemical, a xenobiotic, a carbamate insecticide, an EC 3.1.1.7 (acetylcholinesterase) inhibitor and an environmental contaminant. It is a carbamate ester, an aminopyrimidine and a tertiary amino compound. It is functionally related to a dimethylcarbamic acid. — ChEBI

IUPAC name: [2-(dimethylamino)-5,6-dimethylpyrimidin-4-yl] N,N-dimethylcarbamate

Molecular formula: C11H18N4O2
Molecular weight: 238.29 g/mol
Exact mass: 238.14297583 Da
XLogP3: 1.7
Topological polar surface area: 58.6 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 5
Covalent units: 1
Defined stereocentres: 0

Also known as

PirimorPyrimorFernosAphoxPrimicarbeAficidaRapidPirimor granulate

16 more reported names

Pirimor GPirimicarbeABOLPirimor 50 DPCaswell No. 359C2-(dimethylamino)-5,6-dimethylpyrimidin-4-yl dimethylcarbamatePP 062Dimethylcarbamic acid 2-(dimethylamino)-5,6-dimethyl-4-pyrimidinyl ester1I93PS935T5,6-Dimethyl-2-dimethylamino-4-pyrimidinyldimethylcarbamateCHEBI:82485,6-Dimethyl-2-dimethylamino-4-dimethylcarbamoyloxypyrimidine2-(dimethylamino)-5,6-dimethyl-4-pyrimidinyl N,N-dimethylcarbamate2-(dimethylamino)-5,6-dimethylpyrimidin-4-yl N,N-dimethylcarbamateRefChem:8636422-dimethylamino-5,6-dimethylpyrimidin-4-yldimethylcarbamate

Open full PubChem record PubChem annotations 3D structure image

External database identifiers

ChEBI:CHEBI:8248
ChEMBL:CHEMBL1870931
EPA DTXSID:DTXSID1032569
PubMed:35435491
PubMed:33037899
PubMed:29321614
PubMed:22981507
PubMed:22755540
PubMed:22696953
PubMed:22685538
PubMed:22619160
PubMed:22538775
PubMed:22170593
PubMed:21962496
PubMed:21945620

Retrieved from NIH PubChem on 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Records for CAS 23103-98-2

1 total

Annex

Entry

1624

Pirimicarb (ISO); 2-(dimethylamino)-5,6-dimethylpyrimidin-4-yl dimethylcarbamate

245-430-1

CMR

How CAS 23103-98-2 is used on this site

CAS 23103-98-2 is the Chemical Abstracts Service identifier used to pin this page to a specific substance. In the current dataset, 1 EU annex record shares this identifier, which helps you cross-check whether the same substance appears under one regulatory context or several.

Use this page when a supplier specification, SDS or raw-material dossier gives you CAS 23103-98-2 and you need to see every linked Annex II–VI record in one place. The entry cards above are the quickest route to concentration limits, warnings, annex placement and product-type conditions.

Frequently asked questions

A substance identified by CAS 23103-98-2 may appear in multiple EU cosmetic regulation annexes when it is subject to different conditions in different contexts. For example, a substance might be restricted under Annex III with specific conditions, and the same CAS might also appear in Annex IV as an approved colorant under separate entry conditions. Each entry must be reviewed individually.

Cross-reference the CAS number against your raw material specification sheets and CoA documents. When a CAS appears in Annex II, verify absence. When it appears in Annex III, verify that concentration limits and product type conditions are met in your formulation. All annex entries sharing this CAS number are listed above.

A CAS number is assigned by the Chemical Abstracts Service (USA) and is globally recognised. An EC number is a European Commission identifier from inventories such as EINECS, ELINCS or the NLP list. Both identifiers may appear in EU cosmetic annex entries. Some substances have both, some have only one, and some older entries may have neither.

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